[TYPO3] how can I use cc_debug?

[Matyi Gábor]

Hi!

I try to debug an extension with cc_debug, but unfortunately I don't see 
any debug message.

If I put f.e. the print_r($this) , I see the printed varables. Also the 
krumo($this) work. But after I install the cc_debug and I put f.e. the 
debug($this); nothing happeaned.
I see the docu, but I don't see what I did wrong.

Please help me anybody.

thanks in advance

Gabor Matyi